Update submission format to outputs tree

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

README.md

@@ -35,6 +35,21 @@ To update page content: edit `index.html` and push.
 
 See the **Submit** section in `index.html` for the full JSON schema and intake process.
 Submission method: email `gigabrainchallenge@163.com` with a ZIP package (max ZIP size: 200 MB).
+Expected ZIP structure:
+
+```text
+outputs/
+├── video_quality_eval/
+│   ├── task1/
+│   │   ├── episode_0.mp4
+│   │   └── ...
+│   └── ...
+└── evaluator_test/
+    ├── task1/
+    │   ├── episode_0.mp4
+    │   └── ...
+    └── ...
+```
 
 ## Contact
 

index.html

@@ -108,15 +108,17 @@
           </div>
         </div>
         <div class="bg-gray-900 text-gray-100 rounded-xl p-4 overflow-x-auto text-sm">
-<pre>submission_package/
---task1/
-  --episode_0.mp4
-  --episode_1.mp4
+<pre>outputs/
+--video_quality_eval/
+  --task1/
+    --episode_0.mp4
+    --...
   --...
---task2/
-  --episode_0.mp4
-  --...
---metadata.json</pre>
+--evaluator_test/
+  --task1/
+    --episode_0.mp4
+    --...
+  --...</pre>
         </div>
       </section>